Nnukwu obere ihe eji egwu mmiri Tricone IADC635 9 7/8 na IADC735 9 7/8 nwere ọnụ ahịa mbelata dị na ngwaahịa

Ugbu a, anyị nwere ọtụtụ ihe eji egwupụta ihe ọhụrụ dị elu, gụnyere ụdị IADC635 9 7/8 na IADC735 9 7/8. Ọ bụrụ na ị nwere mmasị, biko kpọtụrụ anyị ozugbo na +86-18563617956.